The correct answer is C. Peripherals.
Peripherals are devices that allow an embedded system to communicate with the outside world. They can be input devices, such as sensors, or output devices, such as actuators. Peripherals can also be communication devices, such as modems or network cards.
Memory is used to store data and programs. It is not used to communicate with the outside world.
Output is used to send data or signals to the outside world. It can be used to control devices, display information, or generate sound.
Input is used to receive data or signals from the outside world. It can be used to control the embedded system, collect data, or provide feedback to the user.
Here are some examples of peripherals:
- Sensors: Sensors are devices that detect changes in the environment, such as temperature, light, or pressure. They can be used to monitor the environment, control the embedded system, or collect data.
- Actuators: Actuators are devices that can move or control something in the environment. They can be used to control machines, open and close doors, or generate sound.
- Communication devices: Communication devices allow the embedded system to communicate with other devices, such as computers, networks, or other embedded systems. They can be used to send and receive data, control devices, or provide updates.
Peripherals are an important part of embedded systems. They allow the embedded system to interact with the outside world and perform its tasks.